What is a gene? A. a single chromosome that is not replicated
B. a double stranded chain of base pairs that lives in the
nucleus
C. factors that are passed from parents to offspring
D. the beginning sequence of DNA that tells a ribosome
where to attach and transcribe
What is a gene?

i believe it would be the lungs.

answer; /// the shaft of the hair consists of dead cells;

plants absorb water from the soil by osmosis. root hair cells are adapted for this by having a large surface area to speed up osmosis. the absorbed water is transported through the roots to the rest of the plant where it is used for different purposes: it transports dissolved minerals around the plant.